These network requests represent attempts to access the certificate revocation list for each assembly that native image generation (NGen) compiles to native code. However, because the server that's running Exchange Server isn't connected to the Internet, each request must wait to time out before the process continues.

To fix this issue, follow these steps:

On the Tools menu in Internet Explorer, select Internet Options, and then select Advanced.

In the Security section, clear the Check for publisher's certificate revocation check box, and then select OK.

Note Clear this security option in Internet Explorer only if the computer is in a tightly-controlled environment.

When the setup is finished, select the Check for publisher's certificate revocation check box again.

When you apply an update rollup package, the update process updates the Outlook Web App files, if it's required. Therefore, any customizations to the Logon.aspx file or to other Outlook Web App files are overwritten, and you must re-create the Outlook Web App customizations in Logon.aspx.

If you meet both of the following conditions, apply the update rollup on the Internet-facing Client Access servers (CAS) before you apply the update rollup on the non-Internet-facing Client Access servers:

Note For other Exchange Server 2010 configurations, you don't have to apply the update rollup on your servers in any particular order.

Restart requirement

The required services are restarted automatically after you apply this update rollup.

Removal information

To remove Update Rollup 22 for Exchange Server 2010 SP3, use the Add or Remove Programs item in Control Panel to remove update 4295699.

More Information

Installing this update on a DBCS version of Windows Server 2012

You can't install or uninstall Update Rollup 22 for Exchange Server 2010 SP3 on a double-byte character set (DBCS) version of Windows Server 2012 if the language preference for non-Unicode programs is set to the default language. To work around this issue, you must first change this setting. To do this, follow these steps:

In Control Panel, select Clock, Region and Language, select Region, and then select Administrative.

In the Language for non-Unicode programs area, select Change system locale.

On the Current system locale list, select English (United States), and then select OK.

After you successfully install or uninstall Update Rollup 22, revert this language setting as appropriate.

References

Learn about the terminology that Microsoft uses to describe software updates.